Improvement in locomotive-truck engines



2 Sheets--Sheovh Patented ocr. 20,1874.

Inl/wahr w. MASON.

Locomotive Truck-Engines.

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2Sheets--S`heet 2. w. M ASU N 'Locomotive Truck-Engines. V`N0,l56,03|,Patented Oct. 20,1874.

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UNITED STATES PATENT OFFICE.

WILLIAM MASON, OF TAUNTON, MASSACHUSETTS.

IMPROVEMENT IN LOCOMOTIVE-TRUCK ENGINES.

Specitication forming part of Letters Patent No. 156,031, dated October20, 1874; application liled September 14, 1874.

To all whom t may concern:

Be it known that I, WILLIAM MASON, of Taunton, in the county of Bristoland State of Massachusetts, have invented new and useful Improvements inLocomotive-Truck Engines; and I do hereby declare that the following isa full and exact description of the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

This invention relates to doubletruck engines, having the boiler andtrucks adapted to move independently of each other, and has for itsobject the conveying ot' steam from the boiler of the locomotive to thesteam-chests upon the independently-moving truck; and consists inadapting the pivot-bearings of the truck and boiler to receive the endsof two independent pipes for conveying steam, and in uniting the ends bya swivel-joint of peculiar construction, as Will be fully describedhereinafter.

In the drawings, Figure 1 represents a sectional elevation of theswivel-joint and its connections; Fig. 2, a side elevation, showing theparts as applied to the truck and boiler; and Fig. 3, a front elevation,partly in section.

To enable others skilled in the art to make and use my invention, I willnow proceed to describe fully its construction and manner of operation.

A represents a circular casting, strongly supported upon the truck andprovided with the bearing-Surface a. and inner and outer flanges al a2,as shown. B represents the casting, adapted to support the boiler, Whichis provided with the bearings b, adapted to turn freely upon the face aof the casting A. The casting B is provided also with a pas'- sage, b',adapted to receive at one end the discharge end of the pipe O, whichcommunioates With the interior of the boiler, and at the other the jointwhich connects it to the pipe upon the truck. C' represents the pipeupon the truck, Which opens at one end, by means of truck-pipes, intothe steam-chests upon each side, and at the other into the intermediatejoint, which. unites it to the passage b.

The joint is constructed in the following manner: D represents asuitable cylinder, ot proper anti-friction metal, suitably securedWithin the lower opening ofthe passage b by means of screws, as shown. dalso represents a cylinder, adapted to tit within the c vlinder'D, whichis provided at the upper end with the beveled-edged lian ge, adapted torest upon the corresponding edge of cylinder D, its lower end beingrigidly secured to pipe C, as shown. dl represents an intermediatepacking, held in the recess of cylinder D by means of the ring d2 andthe double screws aux, as shown.

lThe operation will be readily understood from the foregoingdescription.

The boiler and truck are adapted to move independently of each other bymeans of the pivotbearings a b. The steam is conveyed from the boiler tothe steam-chest upon the truck by means of the pipes O C and theintermediate `joint, the cylinder d of which revolves freely within thecylinder D, Without permitting the escape of steam.

The described combination is exceedingly simple, but well adapted forthe purpose for which it is designed.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The combination of the casting A B, the pipes C C', and the intermediatejoint D d, as described.

This specification signed and witnessed this 22d day of August, 1874.

WM. MASON.

Witnesses:

BENJ. DEAN, AUGUSTUS ANDREWS.

